155287230 has 32 divisors (see below), whose sum is σ = 425931264. Its totient is φ = 35494176.

The previous prime is 155287183. The next prime is 155287243. The reversal of 155287230 is 32782551.

It is a super-2 number, since 2×155287230² = 48228247602145800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 155287191 and 155287200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 369522 + ... + 369941.

It is an arithmetic number, because the mean of its divisors is an integer number (13310352).

Almost surely, 2^155287230 is an apocalyptic number.

155287230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

155287230 is an abundant number, since it is smaller than the sum of its proper divisors (270644034).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

155287230 is a wasteful number, since it uses less digits than its factorization.

155287230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 739480.

The product of its (nonzero) digits is 16800, while the sum is 33.

The square root of 155287230 is about 12461.4296932575. The cubic root of 155287230 is about 537.5001391743.

The spelling of 155287230 in words is "one hundred fifty-five million, two hundred eighty-seven thousand, two hundred thirty".